US137210A - Improvement in table-leaf supports - Google Patents
Improvement in table-leaf supports Download PDFInfo
- Publication number
- US137210A US137210A US137210DA US137210A US 137210 A US137210 A US 137210A US 137210D A US137210D A US 137210DA US 137210 A US137210 A US 137210A
- Authority
- US
- United States
- Prior art keywords
- leaf
- arm
- improvement
- spring
- leaf supports
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 210000000088 Lip Anatomy 0.000 description 6
- 238000006073 displacement reaction Methods 0.000 description 6
- 238000010276 construction Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000036633 rest Effects 0.000 description 2
- 230000000630 rising Effects 0.000 description 2
Images
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
- A47B1/00—Extensible tables
- A47B1/04—Extensible tables with supplementary leaves or drop leaves arranged at the periphery
Definitions
- Figure 1 represents a transverse vertical section through a portion of a table and hinged leaf, showing the arran gementof myimproved support.
- My invention relates to a novel construction and arrangement of a pivoted spring supporting-arm, in combination with a hinged table-leaf, for automatically locking said leaf in its elevated position, as will be hereinafter described.
- A represents, in section,the top of the table; A, a portion of a leaf, which is hinged to the top A in any usual manner; B, the side rail; and B, aportion of one of the legs of the table.
- G is the supporting-bracket, fastened to the leaf A, i
- the portion 0 is provided with flanges c embracing the arm D, and serving to guide the vertical movement of said arm, and to prevent any lateral movement.
- the bracket 0 has an arm, 0, of suitable length, extending downward below the pivoted arm or latch D, and provided at its lower end with a cylindrical pin, around which is secured one end of a spiral spring, E, the opposite end of said spring being secured to the pivoted arm D at (1 and so arranged that the tension of thespring is exerted to force the latch or arm D away from the bracket-arm 0.
- a flanged metal plate, F To the rail B or other suitable point on the table is fastened a flanged metal plate, F, the flange f of which is located in position to receive the lower or free end "of arm or latch D when the leaf A is raised to a horizontal position for use, as shown in Fig. 1.
- the arrangement of the spring is such that the arm is securely held against displacement by the accidental rising of the leaf, and that when it is desired to lower the leaf it will be necessary to raise the leaf and to overcome the tension of the spring by hand or otherwise, and to depress the arm I) so as to permit it to pass under the lip or flange f and rail B before the leaf can be lowered,
- the bracket 0 provided with the arm 0, in
Description
A. G. JOHNSON.
Table-Leaf Supports.
N0. 137,210, PatentedMarch25 1873.
UNITED STATES PATENT OFFICE.
ANDREW O. JOHNSON, OF ROCKFORD, ILLINOIS.
IMPROVEMENT IN TABLE-LEAF SUPPORTS.
Specification forming part of Letters Patent No. 137,210, dated March 25, 1873.
To all whom it may concern:
Be it known that I, ANDREW G. J OHNSON, of Rockford, in the county of Winnebago and State of Illinois, have invented anew and useful Improvement in Table-Leaf Supports; and I do hereby declare that the following is a full and exact description of the same, reference being had to the accompanying drawing and to the letters of reference marked thereon.
Figure 1 represents a transverse vertical section through a portion of a table and hinged leaf, showing the arran gementof myimproved support.
My invention relates to a novel construction and arrangement of a pivoted spring supporting-arm, in combination with a hinged table-leaf, for automatically locking said leaf in its elevated position, as will be hereinafter described. I
In the accompanying drawing, A represents, in section,the top of the table; A, a portion of a leaf, which is hinged to the top A in any usual manner; B, the side rail; and B, aportion of one of the legs of the table. G is the supporting-bracket, fastened to the leaf A, i
and made, for convenience in connecting the arm D, in two parts,c 0 each provided on the adjacent faces with a semi-cylindrical socket or bearin g for the transverse pivot d? of arm I). The portion 0 is provided with flanges c embracing the arm D, and serving to guide the vertical movement of said arm, and to prevent any lateral movement. The bracket 0 has an arm, 0, of suitable length, extending downward below the pivoted arm or latch D, and provided at its lower end with a cylindrical pin, around which is secured one end of a spiral spring, E, the opposite end of said spring being secured to the pivoted arm D at (1 and so arranged that the tension of thespring is exerted to force the latch or arm D away from the bracket-arm 0. To the rail B or other suitable point on the table is fastened a flanged metal plate, F, the flange f of which is located in position to receive the lower or free end "of arm or latch D when the leaf A is raised to a horizontal position for use, as shown in Fig. 1.
D passes the lip or flange f of plate F, and,
pressed upward by the spring, slides backagainst the verticalface of plate F, and rests firmly on the flange or lip f as the leaf is released, thereby holding the leaf in the required horizontal position for use.
It will be seen that the arrangement of the spring is such that the arm is securely held against displacement by the accidental rising of the leaf, and that when it is desired to lower the leaf it will be necessary to raise the leaf and to overcome the tension of the spring by hand or otherwise, and to depress the arm I) so as to permit it to pass under the lip or flange f and rail B before the leaf can be lowered,
thereby effectually guarding it against accidental displacement and the consequent destruction of material thereon incident to such accidental displacement.
I am aware that pivoted spring supporting arms or latches have been employed for supporting hinged table-leaves, and I do not, therefore, claim such invention, broadly, but
Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-
The bracket 0 provided with the arm 0, in
combination with the pivoted arm or latch D and spiral spring E, arranged and operating substantially as described.
This specification signed and witnessed this 12th day of November, 1872.
ANDREW JOHNSON.
Witnesses:
JAS. G. KNAPP, G. W. FORD.
Publications (1)
Publication Number | Publication Date |
---|---|
US137210A true US137210A (en) | 1873-03-25 |
Family
ID=2206626
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US137210D Expired - Lifetime US137210A (en) | Improvement in table-leaf supports |
Country Status (1)
Country | Link |
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US (1) | US137210A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20050176665A1 (en) * | 2001-05-18 | 2005-08-11 | Sirna Therapeutics, Inc. | RNA interference mediated inhibition of hairless (HR) gene expression using short interfering nucleic acid (siNA) |
US20050261219A1 (en) * | 2001-05-18 | 2005-11-24 | Sirna Therapeutics, Inc. | RNA interference mediated inhibition of interleukin and interleukin receptor gene expression using short interfering nucleic acid (siNA) |
-
0
- US US137210D patent/US137210A/en not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20050176665A1 (en) * | 2001-05-18 | 2005-08-11 | Sirna Therapeutics, Inc. | RNA interference mediated inhibition of hairless (HR) gene expression using short interfering nucleic acid (siNA) |
US20050261219A1 (en) * | 2001-05-18 | 2005-11-24 | Sirna Therapeutics, Inc. | RNA interference mediated inhibition of interleukin and interleukin receptor gene expression using short interfering nucleic acid (siNA) |
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